Gravity Flexible Piezo Film Vibration Sensor - RobotShop
Arduino with Piezo Film vibration sensor - YouTube
Piezo Vibration Monitoring Sensor with Arduino
Innovateking-EU 4pcs Analog Piezoelectric Ceramic Vibration Sensor Module 3.3V/5V for Arduino DIY Kit,Can Sense The Strength Of Vibration And Pressure: Amazon.co.uk: Computers & Accessories